Add Prefix and Suffix Text
Wrap every line with text — quotes, commas, tags, bullets.
Add Prefix and Suffix is a free online tool that wrap every line with text — quotes, commas, tags, bullets. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free — no account, no quota, no watermark
- Category
- Text
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- 3
- Works offline
- Yes, after the first visit
About Add Prefix and Suffix
A string is added to the start or end of every line. The everyday uses are mechanical and constant: turning a column of values into a quoted SQL `IN` list, wrapping paths in quotes for a shell command, adding a comment marker to a block of code, or building repetitive config from a plain list.
How to use it
- Paste the text you want to run through add prefix and suffix.
- Set prefix, suffix and skip empty lines.
The 3 settings
| Setting | What it does | Default |
|---|---|---|
| Prefix | Free text. | ' |
| Suffix | Free text. | ', |
| Skip empty lines | On or off. On by default. | On |
Under the hood
| Runs on | plain JavaScript — runs the whole thing |
| Controls | Prefix, Suffix, Skip empty lines |
Questions
Are empty lines given a prefix too?
No — blank lines are skipped, which is what you want when commenting out a block of code with gaps in it.
Can I add a comma to every line except the last?
Not directly. Add the comma to every line, then delete the final one — or use the SQL IN Clause Builder, which handles the separator properly.